标签:void ide frame style awt string add cti new
package swing; import java.awt.BorderLayout; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.*; public class ADD { JButton b1,b2; JTextField t1,t2,t3; JLabel l1,l2,l3,l4; GridLayout gl; public ADD(){ JPanel p=new JPanel(); JFrame f=new JFrame(); gl=new GridLayout(3,3); b1=new JButton("求和"); b1.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { int sum = Integer.parseInt(t1.getText()) + Integer.parseInt(t2.getText()); t3.setText(sum+""); } }); b2=new JButton("清除"); b2.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { t1.setText(null); t2.setText(null); t3.setText(null); } }); t1=new JTextField(); t2=new JTextField(); t3=new JTextField(); l1=new JLabel("加数1"); l2=new JLabel("加数2"); l3=new JLabel(""); l4=new JLabel(""); f.setSize(500, 500); f.add(p); p.setLayout(gl); p.add(l1); p.add(t1); p.add(l3); p.add(l2); p.add(t2); p.add(l4); p.add(b1); p.add(t3); p.add(b2); f.setVisible(true); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } public static void main(String[] args) { ADD a=new ADD(); } }
标签:void ide frame style awt string add cti new
原文地址:https://www.cnblogs.com/LYY1084702511/p/11022867.html